This stirling engine model is nice scientific gift for young children and adult. Explain the knowledge and have fun easily.

Features:
A Stirling engine is a heat engine that operates by cyclic compression and expansion of air or other gas at different temperatures, such that there is a net conversion of heat energy to mechanical work.
This model can fully display the working principle, so teacher can better explain the knowledge and students can have a better comprehension.
Fully assembled, easy to operate. Just place the model on a cup of hot water, then it can run freely! Temperature difference should be more than 20℃.
No need to fire a alcohol lamp, safer for children, friendly to environment.
Fine workmanship can largely reduce the possibility of gas leakage.
High quality aluminum alloy and acrylic body, be more exquisite and more durable than those made of glass - Perfect scientific gift for children.